build/gui/settingsdialog.o: In function `Settings::initAppearance_gui()':
settingsdialog.cc:(.text+0xa71d): undefined reference to `Settings::onWinColorClicked_gui(_GtkCellRendererToggle*, char*, void*)'
settingsdialog.cc:(.text+0xa7f2): undefined reference to `Settings::onUpColorClicked_gui(_GtkCellRendererToggle*, char*, void*)'
settingsdialog.cc:(.text+0xa8c7): undefined reference to `Settings::onDownColorClicked_gui(_GtkCellRendererToggle*, char*, void*)'
settingsdialog.cc:(.text+0xa99c): undefined reference to `Settings::onTextStyleClicked_gui(_GtkCellRendererToggle*, char*, void*)'
collect2: ld returned 1 exit status